Copy assets from xwalk core library to cordova app
Copy assets from xwalk core library to cordova app

Android library project doesn't handle assets according to
http://developer.android.com/tools/projects/index.html.

BUG=Input tag crashes cordova app

chengxiaole/crosswalk-cordova-android,rakuco/crosswalk-cordova-android,chengxiaole/crosswalk-cordova-android,rakuco/crosswalk-cordova-android,awesome-niu/crosswalk-cordova-android,awesome-niu/crosswalk-cordova-android,crosswalk-project/crosswalk-cordova-android,awesome-niu/crosswalk-cordova-android,hgl888/crosswalk-cordova-android,crosswalk-project/crosswalk-cordova-android,hgl888/crosswalk-cordova-android,crosswalk-project/crosswalk-cordova-android,hgl888/crosswalk-cordova-android,rakuco/crosswalk-cordova-android,chengxiaole/crosswalk-cordova-android